fix a broken link

Author: rpendleton

01_data_structures.html

@@ -400,7 +400,7 @@ <h2>Code</h2>
 <li id="fn:2">
 Ken&rsquo;s algorithm generates a finite state machine<a href="#fnref:2" rev="footnote">&#8617;</a></li>
 <li id="fn:3">
-Alex recommended to me Marvin Minsky&rsquo;s <a href="minsky-computation">&ldquo;Computation: Finite and Infinite Machines&rdquo;</a>
+Alex recommended to me Marvin Minsky&rsquo;s <a href="https://dl.acm.org/doi/book/10.5555/1095587">&ldquo;Computation: Finite and Infinite Machines&rdquo;</a>
 to learn more about these topics.
 It is a fantastic book which explores theory of computation, including finite state machines, neural networks,
 and Turing machines from a philosophical and mathematical perspective.<a href="#fnref:3" rev="footnote">&#8617;</a></li>

01_data_structures.md

@@ -87,7 +87,7 @@ not be a miracle.
 We should be writing basic code, character by character, identical.
 Imagine how wonderful it would be if you could understand what someone else wrote.
 
-[^minsky]: Alex recommended to me Marvin Minsky's ["Computation: Finite and Infinite Machines"](minsky-computation) 
+[^minsky]: Alex recommended to me Marvin Minsky's ["Computation: Finite and Infinite Machines"][minsky-computation] 
     to learn more about these topics. 
     It is a fantastic book which explores theory of computation, including finite state machines, neural networks,
     and Turing machines from a philosophical and mathematical perspective.